ASTM A789 2205 Duplex Stainless Steel Tube S31803 25.4X2.11mm TIG Welded

• Customization: Available
• After-sales Service: Supplied
• Warranty: 30 Years
• Model NO.: Stainless Steel Welded Pipe
• Type: Seamless
• Technique: Cold Drawn
• Material: Stainless Steel
• Surface Treatment: Polished
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Material2: Austenitic Stainless Steel
• Material3: Super Duplex Steel
• Material4: Ferritic Stainless Steel
• Material5: Martensitic Stainless Steel
• Material6: Precipitation Hardened Stainless Steel
• Material7: Urea Grade Stainless Steel Pipe
• Applicaiton: Nuclear Power/Electric Power/Oil Refining
• Applicaiton2: Oil and Gas Exploitation
• Applicaiton3: Coal Chemical Industry
• Applicaiton4: Fine Chemical Industry/Natural Gas
• Applicaiton5: Offshore Engineering&Shipbuilding
• Applicaiton6: Sanitary Tubes/Instrumentation Tubing
• Applicaiton7: Seawater Desalination&Water Treatment
• Applicaiton8: Heat Exchanger/Radiator/Steam Boiler
• Applicaiton9: Metallurgy/Oil Exploitation
• Transport Package: Plywood Cases/Plastic Bags Bundled/U Tube Packing
• Specification: OD 6.35-168.3mm
• Trademark: EZS
• Origin: China
• HS Code: 730441
• Production Capacity: 200000 Tons/Year

Product Description

Product Description

 

Materials:	S31803/2205	Product Name:	Duplex Stainless Steel Tube
Standard:	ASME SA789	O.D.:	5/8"-2"
W.T.:	BWG18-BWG14	Length MAX:	12000MM Max.
Pipe Finish:	TIG Welded	Type:	Welded
Shape:	Round	Surface:	Bright Annealed
Application:	Heat Exchanger	Package:	Wooden Case
High Light:	duplex stainless steel pipe ,  duplex ss pipe

ASTM A789 2205 duplex stainless steel S31803 Pipe 25.4x2.11mm

 

 

 

2205 Duplex/Super Duplex Stainless Steel (1.4462,UNS S31803/UNS S32205)

The yield strength is about twice that of austenitic stainless steels, thus allowing a designer to save weight and making the alloy more cost competitive when compared to 316L or 317L.

 

Alloy 2205 (UNS S32305/S31803) is a 22% chromium, 3% molybdenum, 5-6% nickel, nitrogen alloyed duplex stainless steel with high general, localized, and stress corrosion resistance properties in addition to high strength and excellent impact toughness.
Alloy 2205 provides pitting and crevice corrosion resistance superior to 316L or 317L austenitic stainless steels in almost all corrosive media. It also has high corrosion and erosion fatigue properties as well as lower thermal expansion and higher thermal conductivity than austenitic.

 

Duplex 2205, also known as UNS S32205, is a nitrogen-enhanced stainless steel. Users choose Duplex 2205 for its excellent corrosion resistance along with its high strength. It is important to note that Duplex 2205, offers much higher levels of corrosion resistance than most other austenitic stainless steels. Other benefits include:

 

• High resistance to pitting and crevice corrosion
• Excellent in most caustic environments
• Good weldability

 

To be considered Duplex 2205, a stainless steel must have a chemical composition that includes:

• Cr 21-23%
• Ni 4.5-6.5%
• Mn 2% Max
• Mo 2.5-3.5%
• N 0.08-0.20%
• P 0.30% max
• C 0.030% max

 

Specifications of Duplex Stainless Steel Welded Tube

 

1. Standard: ASTM ASME
2. Grade: 630 / 631 / 2205 / 2507 / 17-4PH
ASTM A789, ASTM A790, ASTM A450, ASTM A530,
GB/T 14976, GB/T 14975, GB/T 13296, etc
3. OD: 8mm-1000mm
4. Wall thickness: 0.3mm-30mm
5. Length: max.18000mm or as demand

6. Surface finish: Polishing (180#,220#,240#,320#400#,600#), Hairline, acid pickled, etc.

The advantage of a duplex structure is that it combines the favorable qualities of a ferritic alloy (stress corrosion cracking resistance and high strength) with those of an austenitic alloy (ease of fabrication and corrosion resistance).

Usage of 2205 Duplex stainless steel should be limited to temperatures below 600° F. Extended elevated temperature exposure can embrittle 2205 stainless

 

 

 

Specifications:

 

UNS S31803

ASME SA-182 (F51), SA-240, SA-798, SA-790, SA-815
ASTM A182 (F51),A240, A276, A479, A789, A790, A815, A928, A988
SAE J405

 

UNS S32205

ASME SA-182 (F60), SA-240, SA-798, SA-790, SA-815
ASTM A182 (F60), A240, A276, A479, A480, A798, A790, A815, A928, A988
SAE J405

 

 

Features

• High resistance to chloride stress corrosion cracking
• Chloride pitting and crevice corrosion resistance superior to 317L stainless
• Good general corrosion resistance
• High strength
• Good sulfide stress corrosion resistance
• Useful up to 600°F

Applications

 

• Chemical process vessels, piping, and heat exchangers
• FGD scrubber systems
• Pulp mill digesters, bleach washers, chip presteaming vessels
• Food process equipment
• Oil field piping, heat exchangers

 

 

Specifications:

 

Specifications (ASTM/ASME) Duplex Stainless Steel Pipe
Alloy	UNS Designation	Material Specification	Tubing Specification	Pipe Specification
2205	S31803/S32205	A 240/SA-240	A 270	A 790/SA-790
			A 789/SA-789	A928/SA928

 

 

 

 

Steel grade	45% MgCl at 155oC	40% CaCl2 at 100oC	40% CaCl2 at 100oC, 0.9 x Rp0.2	25% NaCl, pH 1.5, 106oC	25% NaCl, 106oC	1500 ppm Cl- at 100oC
4307	Probable	Probable	Probable	Probable	Probable	Probable
4404	Probable	Probable	Probable	Probable	Possible	Probable
2201	Probable	Not probable	Not probable	Not probable	Not probable	Not probable
2304	Probable	Not probable	Not probable	Not probable	Not probable	Not probable
2404	Probable	Possible	Not probable	Not probable	Not probable	Not probable
2205	Probable	Not probable	Not probable	Not probable	Not probable	Possible
2507	Probable	Not probable	Not probable	Not probable	Not probable	Not probable
254 SMO	Probable	Not probable	Not probable	Not probable	Not probable	Not probable